Thanks Matt, I was thinking that sewing the panels together along the seam and then welding them so that the sewing is holding it all in place to ensure a good weld? Join all the panels and seal them before then attaching to the floor the inner floor seems would be simple enough a nd i can’t see that the to seams would be much different from what we currently do but it may be neater finish, Just ideas at present as I seam to have two DIYpackrafts that work but have lots of seams that could be looking a whole lot better. Obviously my ineptitude but I don’t like being crap at things!!